1.Aiming at the characteristics of RLG strapdown inertial navigation system,the performances of Kalman filter,analytic gyrocompassing and indirect estimation are analyzed in theory.

1.针激光陀螺导航系统的特点,从理论上分析卡尔曼滤波法、解析陀螺罗经法和间接估计法3导航系统常用初始准方法的特点。